Directional Self-Assembly of Ligand-Stabilized Gold Nanoparticles into Hollow Vesicles through Dynamic Ligand Rearrangement

Hickey, Robert J.; Seo, Myungjoo; Luo, Qingjie; Park, Soo‐Young

doi:10.1021/la503903n

Cited by 28 publications

(23 citation statements)

References 33 publications

(58 reference statements)

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“…According to previousr eports, nanoparticles have self-assembly behavior due to the rearrangement of surface ligands in response to the addition of poor solvents. [19] Therefore, firstly,b ecause of the insolubility in the organic solvents that were used, the surface ligandsr eorganize to minimize the contact between organic solventa nd ligand molecules at the water/organic solvents interface with increasing content of organic solvent, andt he CuNCs to form amphiphilic structures.T hen, GSH-CuNCs are adsorbed at the interface of water/organic solventd omains and may have served as interfacial templates for the accumulation of GSH-CuNCs into ordered GSH-CuNC assemblies. The average size of organic solvent domains seems to specify the size of the GSH-CuNCs assemblies, which is controllable by means of the solventcomposition.…”

Section: Self-assembly-induced Emission (Saie)a Nd Solvent Effect Of mentioning

confidence: 99%

Stimuli‐Responsive Fluorescent Nanoswitches: Solvent‐Induced Emission Enhancement of Copper Nanoclusters

Yuan

Wang

Hao

2020

Chemistry A European J

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Copper nanoclusters (CuNCs) as a new class of fluorescent materials have attracted a great deal of interest due to their outstanding fluorescence properties. In this work, a variety of organic solvents were used to induce self‐assembly of glutathione‐capped CuNCs (GSH‐CuNCs) to form ordered assemblies with enhanced fluorescence properties. Assemblies with multicolor fluorescence emission were constructed on the basis of the aggregation‐induced emission (AIE) of GSH‐CuNCs and the solvent effect. The fluorescence emission from these GSH‐CuNCs assemblies can also be tuned from yellow to purple by changing the organic solvent. A possible mechanism based on the size of the assemblies and electron transfer was explored to explain the solvent effects on GSH‐CuNCs. Stimuli‐responsive nanoswitches with excellent reversibility can be controlled by changing the type of organic solvent and the ratio of the organic solvent to the aqueous solution of GSH‐CuNCs. As the CuNCs assemblies exhibit strong, stable, and color‐tunable fluorescence, they were employed as color‐conversion materials for recognizing different organic solvents.

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Section: Self-assembly-induced Emission (Saie)a Nd Solvent Effect Of mentioning

confidence: 99%

Stimuli‐Responsive Fluorescent Nanoswitches: Solvent‐Induced Emission Enhancement of Copper Nanoclusters

Yuan

Wang

Hao

2020

Chemistry A European J

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“…Recently, several strategies have been developed to combine the characteristics of vesicles and the unique physical properties of inorganic nanoparticles. Hickey et al [ 66 ] proposed a novel approach to prepare all-nanoparticle vesicles using ligand-stabilized gold particles as a building block. All nanoparticle vesicles were synthesized by these authors by using ligand-stabilized gold particles as a building block.…”

Section: Organometallic and Hydrophobic Ligands Capping Agents Fomentioning

confidence: 99%

“…The hydroxyalkyl ligand rearrangement on AuNPs, which leads to increased hydroxyl group density at the nanoparticle/water interface-terminated gold nanoparticles, was found responsible of spontaneous anisotropic self-assembly of the nanoparticles into well-defined hollow vesicle-like assemblies in water, without any template. Furthermore, these authors highlight the dynamic nature of surface ligands on gold particles and demonstrate that the hydrophobic effect can be used as a versatile tool for anisotropic self-assembly of nanoparticles stabilized with 11-mercapto-1-undecanol (MUL) ( Figure 4 ) [ 66 ].…”

Section: Organometallic and Hydrophobic Ligands Capping Agents Fomentioning

confidence: 99%

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Hydrophobic and Hydrophilic Au and Ag Nanoparticles. Breakthroughs and Perspectives

Fratoddi

2017

Nanomaterials

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This review provides a broad look on the recent investigations on the synthesis, characterization and physico-chemical properties of noble metal nanoparticles, mainly gold and silver nanoparticles, stabilized with ligands of different chemical nature. A comprehensive review of the available literature in this field may be far too large and only some selected representative examples will be reported here, together with some recent achievements from our group, that will be discussed in more detail. Many efforts in finding synthetic routes have been performed so far to achieve metal nanoparticles with well-defined size, morphology and stability in different environments, to match the large variety of applications that can be foreseen for these materials. In particular, the synthesis and stabilization of gold and silver nanoparticles together with their properties in different emerging fields of nanomedicine, optics and sensors are reviewed and briefly commented.

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Section: Ligand-guided Self-assemblymentioning

confidence: 99%

Controlled Assembly of Plasmonic Nanoparticles: From Static to Dynamic Nanostructures

et al. 2021

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The spatial arrangement of plasmonic nanoparticles can dramatically affect their interaction with electromagnetic waves, which offers an effective approach to systematically control their optical properties and manifest new phenomena. To this end, significant efforts were made to develop methodologies by which the assembly structure of metal nanoparticles can be controlled with high precision. Herein, recent advances in bottom-up chemical strategies toward the well-controlled assembly of plasmonic nanoparticles, including multicomponent and multifunctional systems are reviewed. Further, it is discussed how the progress in this area has paved the way toward the construction of smart dynamic nanostructures capable of on-demand, reversible structural changes that alter their properties in a predictable and reproducible manner. Finally, this review provides insight into the challenges, future directions, and perspectives in the field of controlled plasmonic assemblies.

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Directional Self-Assembly of Ligand-Stabilized Gold Nanoparticles into Hollow Vesicles through Dynamic Ligand Rearrangement

Cited by 28 publications

References 33 publications

Stimuli‐Responsive Fluorescent Nanoswitches: Solvent‐Induced Emission Enhancement of Copper Nanoclusters

Stimuli‐Responsive Fluorescent Nanoswitches: Solvent‐Induced Emission Enhancement of Copper Nanoclusters

Hydrophobic and Hydrophilic Au and Ag Nanoparticles. Breakthroughs and Perspectives

Controlled Assembly of Plasmonic Nanoparticles: From Static to Dynamic Nanostructures

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